With fewer buttons to push and fewer operational steps to navigate, the simplified menu format on the GPSMAP 420s makes it easy for you to see and select the data you want to access on-screen.

Plug in optional BlueChart g2 Vision cards to add true 3D-view detailed mapping capabilities (both above and below the waterline), plus helpful auto guidance, high-resolution photomapping detail, and “real picture” aerial photos of ports, harbors,marinas, waterways, navigation landmarks and other points of interest.

Garmin 420s Features

• Ultra-bright 4" diagonal QVGA display, 320 x 240 pixels - over 800 nits of brightness
• Dual frequency transom mount tranducer
• New streamlined user interface offers easy selection of functions and features
• Preloaded worldwide satellite imagery
• Single SD memory card slot for BlueChart g2 Vision cards, as well as saving waypoints, routes and tracks to a SD card which can be shared with others
• Built-in GPS antenna
• BNC connector for optional GA29 remote GPS antenna
• Backlit keypad for easier operation at night
• CANet proprietary bus allows display and control of full feature sounder data on Garmin chartplotters
• Two NMEA 0183 I/O ports
• Unit dimensions: 5.7"W x 5.0"H x 2.7"D

Physical & Performance:
Unit dimensions, WxHxD:	5.7" x 5.0" x 2.7" (14.5 x 12.7 x 6.9 cm)
Display size, WxH:	2.4" x 3.2", 4.0" diagonal (6.1 x 8.1 cm, 10.2 cm diagonal)
Display resolution, WxH:	240 x 320 pixels
Display type:	QVGA display
Weight:	1.3 lb (590 g)
Battery:	none
Battery life:	none
Waterproof:	yes (IPX7)
Antenna:	internal
NMEA output:	NMEA 0183
RoHS version available:	no

Maps & Memory:
Basemap:	yes
Preloaded maps:	no
Ability to add maps:	yes
Built-in memory:	none (cannot load maps to internal memory)
Accepts data cards:	SD card slot
Waypoints:	1,500
Routes:	20
Track log:	10,000 points; 20 saved tracks

Features:
Garmin radar compatible:	no
Garmin sonar compatible:	yes
CANet™ compatible:	yes
Garmin Marine Network™ compatible:	no
Supports AIS (tracks target ships' position):	yes
Supports DSC (displays position data from DSC capable VHF radio):	yes
Audible alarms:	yes
Tide tables:	yes
Hunt/fish calendar:	no
Sun and moon information:	yes
3D map view: (with optional BlueChart g2 Vision card)	yes
Auto Guidance: (with optional BlueChart g2 Vision card)	yes
Automatic routing (turn by turn routing on roads):	no
XM WX Weather & Radio for U.S. compatible:	no
Voice prompts (e.g. "Turn right in 500 ft."):	no
Remote control:	no
Headphone jack/audio line-out:	no
Audio/video input/output:	no
Portable:	no
Automotive/motorcycle-friendly:	no

• GPSMAP 420s
• Built-in GPS Receiving Antenna
• Dual frequency transom mount transducer
• Power/Data cable
• Mounting bracket with tilt/swivel
• Protective front cover
• Owner's manual and Quick Reference Guide

>>> Garmin g2 Americas Vision Charts

>>> Garmin g2 Atlantic Vision Charts

>>> Garmin g2 Pacific Vision Charts

>>> BlueChart g2 Vision Features